Cylinder



(NoModeL) J. R. ALSING.

TRITURATING CYLINDER. No. 264,213,. I l Patented Sept. 12, 1882.

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UNITED STATES PATENT OFFICE.

JOHN R. ALSING, OF HOBOKEN, NEW JERSEY.

TRITURATING-CYLINDER.

SPECIFICATION forming part of Letters Patent No. 264,213, datedSeptember 12, 1882.

Application filed June 8, 1882. (No model.)

To all whom it may concern:

I Be it known that I, JOHN ROBERT ALSING, a citizen of the Kingdom ofSweden, and a resident of Hoboken, in the county of Hudson and State ofNew Jersey, have invented certain new and useful Improvements inTriturating- Cylinders, of which the following is a specification.

My invention relates to cylinders in which granulated substances areintroduced together with pebbles or balls and triturated by a constanttumbling, sliding, and rolling of the charge caused by revolving thecylinder.

The object of my present invention is to provide additional improvementsin the construction' of the cylinder described in my United StatesPatent of January 25, 1870, numbered 99,128, whereby the lining-blocksof the inner circumferential and end surfaces of the cylinder will bebetter held together, preventing the occasional loosening and falling ofone or more of them by the concussion of the tumbling charge, andwhereby samples of the charge, to test its fineness, as its triturationproceeds, may be taken out and examined without stopping the motion ofthe cylinder or removing the cover of the charge-o )ening.

The importance ofa sampling device which does not necessitate thestopping of the cylinder will be readily understood whenit is known thatthe large number one size of my triturating-cylinders, with lining,pebbles, and stuff to be granulated averages about seven and one-halftons; that consequently its momen' tum, when its motion is arrested,exerts a great strain upon theworking machinery, and that some time mustnecessarily be wasted in stopping and starting the same, and in removingand replacing the cover of the chargeepening. As difi'erentsubstances-for instance, clilfstone and chalk, and chemical pigments ofvarious kinds-ere of differentdegrees of hardness, and occasionally,although comparatively dry, contain a greater or less amount ofmoisture, it will naturally take different lengths of time to trituratethem to the required fineness. Ex-

perience has also proved that whatever thede- In the accompanyingdrawings, Figure 1 is a side view, partly in section, ofatritnratiugcylinder provided with my present improvements. Fig. 2 is anend view of the same, partly in section, taken on the line a; a; ofFig. 1. Fig. 3 is a detail section through line y 3/ of Fig. 2, and Fig.4 is one of the compound blocks or slabs of the interior end lining.

A is the exterior iron shell of the cylinder, covered on the inside witha wooden lining, a, within which latter is the lining B C, of porcelainor other vitreous substance, cemented together by plaster-of-paris, asusual. For better retaining the circumferential inner lining, B,inplace, each block is provided with atongue, b, on one side and groove 1)on the opposite side, said tongues and grooves fitting intocorresponding tongues and grooves of the adj-.1- cent blocks, as shownin Fig. 2. This tonguing and grooving together of the blocksserveseffectually to retain them in position until the said slabs orblocks are worn off from the inside past the said tongues and grooves,when a new lining is to be inserted.

The end lining, O, which has heretofore been made straight or parallelwith the outer end surface of the cylinder, I have now made concave onthe inside, or spherical, as shown in Fig. 1; and in order to stillbetter retain it in place I form the blocks in sections, as shown inFig. 4, the block 0 being composed of several minor blocks, 0, which areformed and pressed separately, and then joined together with theordinary pottery-slip of clay-cream orsuch cement as is used by pottersfor attaching' handles to crockery-ware. They are thus cemented togetherbefore being baked, and the block 0 is then baked in a furnace. A blocklike that, C, of the requisite size and thickness, cannot convenientlybe formed and pressed in one piece to obtain the necessary hardness, andis, moreover, liable to warp in baking,- whereas if it is made of anumber of minor pieces pressed separately and cemented together, asbefore stated, into one block before baking the requisite hardness isacquired and the proper shape retained.

To allow of taking out samples of the charge without stopping the motionof the cylinder, I have prepared and provided the following devices:

In a suitable small aperture, E, in the side of the cylinder is fittedan inwardly-opening valve, D, the valve-stem d of which projects adistance beyond the outer surface of the cylinder, and is provided witha spiral or other spring, 6, which, by its expansion, tends to keep thevalve closed. The outer end of the valve-stem d is preferably providedwith a friction-roller, f.

G is a easting,curved in the direction of the motion of the cylinder,preferably grooved upon its upper surface and provided with a lug, g, bywhich it is pivoted to a stationary portion, F, of the frame-workunderneath the cylinder, as shown in Fig. 2. Itis also provided with asmall spout, g, preferably bent so as to project its discharge endtoward the front of the cylinder. The casting G is strengthened with aweb, 9 which has a horizontal portion provided with a roller, h, bywhich it rests upon the surface of another stationary frame portion, H,to take the strain 0d the lug 9 when the spring 6 is compressed duringthe revolution of the cylinder to open the valve D. The casting G is soconstructed and arranged that its upper edge at i is at the same (or aslightly greater) distance from the outer surface of the cylinder as thelength of the portion of the valve-stem which projects beyond saidsurface when the valve is closed. The surface of-the curved incline ofthe casting G is then gradually nearing to the surface of the cylinder,until at i it is at the same distance therefrom as the length of theprojecting portion of the valve-stem when the valve is fully open. Thecasting G is also provided with a handle, I, by which it may be graspedand turned to one side in the position shown in dotted lines in Fig. l.The roller h lessens the friction against the surface of the frameportion H when shifting the position of the casting, and two stops, Kand K, limit the distance of the movement and insure the proper positionof the casting G when thrown in or out of operation.

\Vhen it is desired to take out a sample to ascertain the fineness ofthe charge the casting V G is moved in the position shown in fulllines,

ure on the spring is released and the spring expands, thus again closingthe valve, the powder falling into and through the spout g into anysuitable receptacle, as L. The casting is then moved by the handle I tothe stop K to bring it out of operation and allow the cylinder torevolve as usual, with its valve D closed.

Instead of bringing the surface of the piece G into and out of workingcontact with the valve-stem by lateral movement, the same may beaccomplished by hinging or guiding the piece G to swing or slide in avertical plane, so as to allow of its being raised and lowered.

Having thus described myinvention,Iclaim as new and desire to secure byLetters Patent-- 1. A triturating-cylinder having the lining B andconcave ends 0, said lining being composed of blocks fitted together bytongues and grooves b I), substantially as and for the purpose setforth.

2. The liningblocks C, composed of smaller separately molded and pressedblocks 0, ccmented together before baking, substantially as and for thepurpose set'forth.

3. The combination of the triturating-cylinder A, )rovided with apertureE, the inwardly-opening valve D, having lugs upon the outer end of itsvalvestem, and a roller, f, pivoted between said lugs, the spring 0, anda movably-fixed piece, G, whose working-surface converges with thecylinder-surface in the direction of rotation, and which is capable ofbeing brought in contact with the valve-stem, substantially as setforth.

4. The combination of a trituratingcylinder provided with an aperture,E, with an inwardly-opening valve provided with an outwardlyprojectingstem fitted in the said aperture, a spring, and a movably-fixed piece,G, whose working-surface converges with the cylinder-

